Slashed lime: getting, properties, application

Receiving

Calcium hydroxide under laboratory conditions by mixing sodium hydroxide and aqueous solution of calcium chloride. In mineral form, slaked lime is found in some metamorphic, volcanic, and depth rocks.

In addition, the production of calcium hydroxide is possible when burning coal.

Calcium Hydroxide

Properties

— odorless white powder or colorless crystals that decay when heated to 560 degrees per water and calcium oxide.

Calcium hydroxide refractive index 1,574, acidity (pKa) 12.4, water solubility 0.189 g/100 ml, density 2.211 g/cm3, molar mass 74.093 g/mol.

In alcohol, slaked lime does not dissolve.

Application

Lime water is a saturated solution of white color calcium hydroxide. Its antacid properties are used in the medical field in the treatment of acid burns.

Slaked lime is widely used in the following industries: – for the production of calcium stearate – in the chemical industry; – for the production of oil additives – in the oil refining industry
– in the production of metals.$ Calcium hydoxide is added to the flow of treated gas, to neutralize acid;
– to improve the quality of earth soil — road construction;
– to store vegetables in hangars — production antimicrobial and antifungal preservatives.

To mitigate the greenhouse effect and reduce atmospheric CO2, calcium hydroxide is used as an additive in seawater.
Also slaked lime is used as a natural alternative to chemicals in the fight against beetles, fleas, mites and their larvae.
Often in the construction sphere, slashed lime is used for tricking rafters and whitewashing wooden fences. Thus, the materials protect against ignition and rotting.

Calcium hydroxide also takes part in the manufacture of brake linings, depilation creams, tank mixtures, chlorine lime, ebonite, etc.

In dentistry a special composition of slaked lime is used as a disinfector for root dental canals.

In the food industry, slaked lime in excess is used as a dietary supplement E526. It is added in the manufacture of baby food, fruit juices, energy, soft and alcoholic beverages, sugar cane, pastries and flour products, corn tortillas, sweets and confectionery, food salt, pickles.

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